LONDON (AP) — Scientists Tuesday unveiled what they hope will be one of the world’s fastest biofuel vehicles, powered by waste from chocolate factories and made partly from plant fibers.

Its makers hope the racer will go 145 mph and give manufacturers ideas about how to build more ecologically friendly vehicles.

The car runs on vegetable oils and chocolate waste that has been turned into biofuel. The steering wheel is made out of plant-based fibers derived from carrots and other root vegetables, and the seat is built of flax fiber and soybean oil foam. The body is also made of plant fibers.

Scientists at the University of Warwick say their car is the fastest to run on biofuels and also be made from biodegradable materials. It has been built to Formula 3 specifications about the car’s size, weight and performance.

They hope it can reach speeds of more than 145 mph when it is tested on a racetrack in a few weeks. They have driven it at about 60 mph and are now making final adjustments to the engine before driving it at top speed.

Warwick’s project manager James Meredith said their model shows it is possible to build a fast, efficient, environmentally friendly car.

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